IMPROVED ALGORITHMS FOR DETERMINING BITRATE FOR A STATISTICAL MULTIPLEXING SYSTEM TO ACCOUNT FOR SIGNAL COMPLEXITY INCLUDING FILM MODE AND GOP STRUCTURAL CHANGES

WIPO Patent Application WO/2014/066434

A3

A statistical multiplexer (statmux) system for encoding multiple channels of digital television data is provided with improved algorithms for determining bitrate for encoding and decoding to account for signal complexity, including accounting for film mode and GOP structural changes. In film mode when the lower frame per second rate for film mode is identified, rather than faster rate SD or HD modes, instead of determining bit rate from viewing the next picture in the look ahead buffer (LAB), the system looks at a start time stamp for specific data in the LAB. Accounting for GOP structural changes includes identifying the number of pictures (N) between I type pictures in data provided to an encoder and the number of pictures (M) between P type pictures, rather than using a fixed number for N and M.

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VAN VELDHUISEN BRENDA L (US)
CHEN JING YANG (US)
NEMIROFF ROBERT S (US)

PCT/US2013/066250

July 10, 2014

October 22, 2013

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GEN INSTRUMENT CORP (US)

H04N21/2365

US20050041689A1	2005-02-24
US7418007B1	2008-08-26
US7333515B1	2008-02-19

WARD, Thomas A. (San Diego, California, US)

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